There are quite a few out there... one that always comes to mind for me is the soundtrack for 'The Good the Bad and the Ugly'. To this day, everyone knows the theme with the whistle and the whip-snap chorus. It is probably one of the first soundtracks I can remember hearing that was so emotionally charged, with its frantic open-range sounds and hoof-beat rythms. In a lot of ways, I would compare it with the work of Clint Mansell, who did Requiem for a Dream, with its frantic, fevered highs and mellow, somber lows. No vocals necessary to express the vast emotional palette the composers were painting with.